Means for locking stovepipes in chimney-holes.



J. H. JACOBS.

MEANS FOR LOCKING STOVEPIPES IN CHIMNEY HOLES. APPLICATION FILED AUG.2l. 19!].

1,281,969. 4 Patented Oct. 15; 1918.

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I Specification of Letters Patent.

Patented Oct i5, 1918.

Original application filed July 2, 18-17, Serial No. 178,103. Divided and this application filed AugustZl, 1917. seriaino1187,4e5.'

To all to h-om it may concern:

Be it known that I, Josnrrr H. Jacons, a citizen of the United States, residing at the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Means for Looking Stovepipes in Chimney-Holes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in stove pipe construction, and relates particularly to means for securing the upper extremity of the pipe within the chimney. My object is to provide improvements of the character indicated which shall increase the facilities with which the aforesaid function may be accomplished.

Having briefly outlined improvement I will proceed to describe the same in detail, reference being made to the accompanying drawing in which is illustrated an embodiment thereof. In this drawing:

Figure 1 is a side view partly in section illustrating my improvement in use.

Fig. 2 is a similar view showing one of the locking pawls pressed inwardly for releasing purposes.

3 is a fragmentary view of the locking device shown in detail and on a larger scale than in the other views.

The same reference characters indicate the same parts in all the views.

Let the numeral 12 designate the stove pipe section which enters the chimney hole. My locking device as illustrated in the draw: ing consists of a pair of spring-actuated pawls, one of which is shown in detail in Fig. 3, and which I will designate in its entirety by the numeral 13. This pawl con sists preferably of a sheet metal member 14 which extends inwardly beyond the free extremity of the pipe section, its opposite sides, as they approach its inner extremity, being bent approximately at right angles to the body of the pawl, as shown at 20. The inner ends of these parts 20 are perforated and fitted between two ears 21 formed on a retaining plate 22, one extremity of which is equipped with two lips 16 which pass through openings formed in the pipe section and are clenched on the outside.

The opposite extremity of the plate 22 is also provided with a lip 17 which passes through an opening in the pipe and is also clenched on the outside. A. hinge-pin 23 is passed through the perforations in the inner extremity of the pawl and the registering perforations formed in the ears 21, whereby the pawl is connected with the retaining plate 22. This pawl is normally held in the looking position by means of a spring 24: com posed of a piece of wire which is coiled around the hinge pin 22, one extremity of the spring bearing against the retaining plate, as shown at 26, while its opposite extremity engages the pawl, as shown at 27. The pawl is provided with an actuating pin 28, which when the pawl is in the locked position protrudes through an opening 29 far enough to permit the manipulation of the pawls from the outside by inward pressure on the pins, whereby the pawls are moved to the position shown in Fig. 2, and when so actuated the extremity of the pipe section may be inserted in the chimney hole, and as soon as this occurs the pawls will spring outwardly to the locking position, the outer free extremity of each pawl extending slightly beyond the pipe section and being provided with an offset locking part 50 and an inwardly extending inclined part 31. As the pipe is forced inwardly, the parts 31 have a tendency to move the pawls inwardly to the unlocked position shown in Fig. 2, though it is advisable to press upon the pins 28 to facilitate this movement. A seal or washer 35 is provided at the base of pin 28 which completely covers the opening 29 when the locking device is in operative position, the opening being larger than the pin to permit of free movementof the pin. By having the opening covered no smoke will be allowed to escape.

From the foregoing description my improvement will be readily understood and need not be described further in detail.

This application is divided out of my prior application, Serial #178,103 filed July 2, 1917 Having thus described my invention, what I claim is 1. A stove pipe section having a locking device whose inner extremity is normally spring held in engagement with the inner surface of the pipe section, while the other extremity is outwardly offset, the said device having a pin protruding through an opening formed in the pipe section and accessible for use in pressing the device inwardly to allow its ofl'set end to engage an interlocking part and a seal mounted on the base of the pin and adapted to completely cover said opening when the device is in operative position.

2. A stove pipe section havlng a locking device, said device comprising a retaining Sopies plate having lips integral therewith extending through the pipe and bent into en ag ment therewith, the plate having inwardly extending ears thereon, a spring pressed pawl pivotally mounted in said ears, by means of a pintle, a pin on said pawl adapt ed to protrude through an opening in the pipe section, and an ofiset on the free end of the pawl.

In testimony whereof I ai fix my signature.

JGSEPH H. JACOBS.

of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 1'3. (3. 

